GRIFFITHS — THE GEAMA GRASSES. 411 



long, the basal portion often included in the sheath at an thesis; strikingly colored, 

 with its purple glumes, green lemmas and cinnabar-colored anthers; spikes about 12, 

 rather lax, flattened, 2.5 cm. long including the awns; spikelets 2-flowered with an 

 additional rudiment consisting of a short, naked, awn-like projection beyond the palet 

 •of the second floret, and usually included in the fold of the palet; lower floret herma- 

 phrodite, the second stamina te or neuter; glumes sharply and hispidly keeled, acumi- 

 nate but not awned, the second about 7 mm. in length, the first a trifle shorter; lemma 

 of lower floret about 8 mm. long, with 3 short awns, the lateral awns 2 mm. shorter 

 than the central; lemma of upper floret 12 mm. long, lcng-awned, the awns about the 

 same relative length as in the lower floret, prominently scabrous; palet long, narrow, 

 with 2 very short awns, plicate; caryopsis not seen. (Figure 58.) 



No authentic material of this has been examined. Several of the older authors have 

 listed it from Acapulco, but referred to it various forms of B. filiformis. It is dis- 

 tinguished from other species of the group by its large, stout, glaucous aspect and by 

 "its lack of papillose hairs on the edges of the leaves. 



Hitchcock's no. 7080, from Manzanillo, Mexico, is the only collection that I am able 

 to refer to this species. It grows in large patches so close to the sea that the spray 

 reaches it at high tide. 



80. Bouteloua radieosa (Fourn.). 



Dinebra bromoides H. B. K. Nov. Gen. & Sp. 1: 172. pi. 51. 1816, not Bouteloua 

 bromoides Lag. 1816. My interpretation of this is based upon the figures and descrip- 

 tion cited. There has been some confusion concerning this species, due mainly to 

 the misinterpretation of this and also of D, repens H. B. K. See also Presl, Rel. 

 Haenk. 1 : 292. 1830. The Haenke specimen in the herbarium of the German Uni- 

 versity of Prague shows that the species was correctly interpreted by Presl. 



Atheropogon bromoides Roem. & Schult. Syst. Veg. 2 : 415. 1817. Based upon Dine- 

 bra bromoides H. B. K. See also Spreng. Syst. Veg. 1: 293. 1825. Sprengel cites 

 Aristida arnericana Swartz as a synonym, but that name does not belong to this species. 

 It appears that Fournier b misinterpreted this. He credits the species to Roemer 

 and Schultes and cites Dinebra bromoides H. B. K. as a synonym. According to my 

 interpretation, however, the specimens which he cites belong to J., filiformis. Galeotti 

 5704 in the U. S. National Herbarium and the herbarium of the Botanical Garden of 

 Brussels, a Karwinski specimen in the St. Petersburg Botanical Garden, and Schaffner 

 125 in the Willdenow Herbarium, all belong to A. filiformis. The same is true of 

 Botteri 107 and Liebmann 575. A sheet of the last mentioned specimen in the National 

 Herbarium is from the herbarium of the Museum at Paris and is said to have been 

 determined by Fournier. 



Eutriana bromoides Kunth, Rev. Gram. 1 : 95. 1829, not Trinius, 1824. Based upon 

 Dinebra bromoides H. B. K. See also Kunth, Enum. PI. 1 : 281. 1833 and op.cit. 2: 

 234. pi. 17. f. 4. 1835; also Steud. Syn. PI. Glum. 1 : 216. 1854.<= 



Nestlera festucatformis WilkL; Steud. Nom. Bot. ed. 2.2: 192. 1841. A herbarium 

 name only, given as a synonym of Eutriana bromoides. 



Eeterostegafestucaeformis Bonpl. ; Fourn. Mex. PI. 2 : 140. 1881. A herbarium name 

 cited as a synonym of Atheropogon bromoides. 



Atheropogon radicosus Fourn. Mex. PL 2 : 140. 1881. Bourgeau 450, from Mexico, is 

 the type. This number in the herbaria of the St. Petersburg Botanical Garden, 

 Museum at Paris, and Botanical Garden of Brussels and in the U. S. National Her- 

 barium has been examined. The specimen at Paris is the type. 



a See discussion after Bouteloua arnericana. 



&Mex. PL 2: 140. 1881. 



c For use of this date of publication see Rendle, Journ. Bot. 37 : 33. 1899. 



